Rod-puller



J. B. DOWNEY AND A. C. EDGECOMB.

ROD FULLER.

APPLICATION FILED JAN. 23. I920.

,3 5,7, 85 3 I I Patented NOV. 2, 1926.

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JOHN B. DOWNEY AND ARTHUR C. EDGEOO MB, .OF TOPSHAM, MAINE.

ROD-FULLER.

To all whom it may concern Be it known that we, JOHN B. DOWNEY andARTHUR C. Enenooirc, citizens of the United States, residing at Topsham,in the county of Sagadahoc and State of Maine, have invented certain newand useful Improvements in Rod-Pullers, of which the following is a.specification.

This invention relates to rod pullers and has for an object to provide adevice with improved means for engaging and exerting stress upon a rodas, for instance, the tie rod of a concrete pouring-mold to withdraw therod from the concrete mass which has been poured about such .rod.

Referring to the accompanying drawings, which are made a part hereof andon which similar reference characters indicate similar parts,

Figure l is a view of the device in plan or elevation according to theposition in which the device is operated, it being operable in either ofsuch positions,

Fig. 2 is a view of the device in end elevation,

Fig. 3 is a plan view of the base to which the lever is fulcrumed,

Fig. 1 is a view in edge elevation of the gripping member, and

Fig. 5 is a view of the gripping member in plan.

The rod puller which forms the subject matter of this applicationcomprises a base adapted to bear against a fixed abutment 10 which maybe the surface of a concrete wall or any body from which a rod is to bepulled or any article from which the pulling is to take place. The base10 is shown as approximately square, it being understood, however, thatthe design of the base is immaterial to the presentinvention but isprovided with upstanding ears 11 which fulcrum the pulling lever at 12.

The pulling lever comprises spaced plate members 13 each of which isseparately fulcrumed to one of the ears 11 by one of the pintles 12 andare connected by means of the handle portion 14:. Between the plates 13of the lever the gripping member 15 is pivoted, as at 16, and isprovided with an opening 17 to receive the rod 18 which is to be pulled.

For the purpose of permitting the swinging of the gripping member 15without hindrance, the base 10 is provided with concave depression 19within, which the opening 20 Specification of Letters Patent.

Patented Nov. 2, 1920.

Applicationfiled January 23, 1920. Serial No. 353,432.

is provided for the passageof the rod 18. To further strengthen thedevice, arcuate grooves 21 are provided in the base 10 in which thesegmental plates 13 are engaged so that the rotation of the plates abouttheir fulcrum 12 does not displace the circumferential edges from thearcuate grooves 21.

. In operation it is assumed that the rod to be pulled has an endextending beyond the face of some body or fixed abutment, as indicatedat Figs. 1 and 2. The device is applied by passing the base 10 over therod with the rod through the opening 20 of the base and simultaneouslythrough the opening 17 of the gripping member 15. The lever is moved tothe position providing for the gripping member to engage the red as nearto the face of the abutment as convenient and by reason of the eccentricpivoting of the gripping member 15 a movement of the lever causes theedges of the gripping member, surrounding the opening 17, to en gage therod 18 in the usual well-known manner. The gripping of the rod in thismanner and by this mechanism prevents the gripping member from slippingupon the rod and the manual moving of the lever about its fulcrum mustresult in the moving of the rod 18 relative to the base 10 andconsequently relative to the abutment upon which the base 10 rests. Ifnecessary after swinging the lever from the full line to the dotted lineposition, as shown at Fig. 1, the device may again be movedupon the rod,a second grip taken and the rod pulled another step, which action may berepeated as often as may be required to entirely move the rod from itsengagement.

Having thus fully described our said invention, what we claim as new anddesire to secure by Letters Patent, is:

1. A rod puller comprising a base having a centrallydisposedrod-receiving opening therein and with arouate grooves formedupon opposite sides of the opening, a com posite lever comprising spacedplates having segmental members fulcrumed upon the base with peripheriesof the segments movable in the arcuate grooves symmetrically spaced uponopposite sides of the opening in the base, and a gripping member pivotedbetween the members of the lever, said gripping member having arod-receiving opening which is concentric with the rod-receiving openingof the base when the rod puller is in its initial position.

- 2.7 A rod puller comprising a base having a rod-receiving openingtherein and with arcuate grooves formed upon opposite sides of theopening, a composite lever compris ing spaced plates having segmentalmembers fulcrumed upon the base With the periph eriesof the segmentsmovable in the arcuate grooves spaced upon opposite sides of the openingin the base, and a gripping mem ber pivoted between the members of thelever.

In WitnessWhei-eof We have hereunto set our hands and seals atWaterville, Maine this 10th day of J anuary, A. D. nineteen hundred andtwenty.

7 JOHN B'. DOWNEY. [Ls] ARTHUR C. EDGECOMB. [L. s.]

Witnesses to DoWney:

MARK J. BARTLETT, CHARLEs W. ATCHLEY.

Witnesses to signature of Arthur C.

Edgecomb:

ROBERT Vv. DE WOLFE, JE-ssm M. EDGECOMB.

signature or" John B.

